US3136044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for repair of defective pump casings
Assignee: Individual
•
Filing: 1961-03-07
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Granted: 1964-06-09
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Expires: 1981-03-07
Abstract
No abstract record available.
Inventors
- 👤 Funk Charles Francis
- 👤 Funk John Eugene
- 👤 Jack L York
- 👤 Funk Marguerite Bourgeois
- 👤 Guy L Funk
- 👤 Margaret M Funk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:07
CPC Classifications
B; B23; B23P; B23P6/00; B23P6/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49236; Y10T29/49238; Y10T29/49243; Y10T29/49718; Y10T29/49746
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
METHOD OF REPAIRING THE DEFECTIVE INTERIOR SHROUD SURFACE OF A PUMP CASING COMPRISING THE STEPS OF: MOUNTING THE PUMP CASING FOR ROTATION IN A SUBSTANTIALLY VERTICAL PLANE; PLACING THE BOTTOM OF THE CASING IN A SAND BASE TO PREVENT BURN THROUGHS AND PREHEATING THE CASING, INTRODUCING A PREDETERMINED CHARGE OF REACTED THERMIT METAL INTO THE BOTTOM INTERIOR PORTION OF THE CASING; ROTATING THE PUMP CASING WHILE IN SAID BASE TO CONSECUTIVE ANGULARLY DISPLACED POSITIONS IN THE VERTICAL PLANE AND INTRODUCING ADDITIONAL CHARGES OF THERMIT METAL INTO THE BOTTOM OF THE CASING AT EACH OF THE ANGULARLY DISPLACED POSITIONS WHEREBY THE CIRCUMFERENTIAL INTERIOR OF THE CASING IS FUSED WITH THE THERMIT METAL TO PROVIDE A BUILT-UP CASING SHROUD.
Claim 2
Dependent Claim
117 words
METHOD OF REPAIRING THE DEFECTIVE INTERIOR SHROUD SURFACE OF A PUMP CASING COMPRISING THE STEPS OF: MOUNTING THE PUMP CASING FOR ROTATION IN A SUBSTANTIALLY VERTICAL PLANE; PLACING THE BOTTOM OF THE CASING IN A SAND BASE TO PREVENT BURN THROUGHS AND PREHEATING THE CASING, INTRODUCING A PREDETERMINED CHARGE OF REACTED THERMIT METAL INTO THE BOTTOM INTERIOR PORTION OF THE CASING; ROTATING THE PUMP CASING WHILE IN SAID BASE TO CONSECUTIVE ANGULARLY DISPLACED POSITIONS IN THE VERTICAL PLANE AND INTRODUCING ADDITIONAL CHARGES OF THERMIT METAL INTO THE BOTTOM OF THE CASING AT EACH OF THE ANGULARLY DISPLACED POSITIONS WHEREBY THE CIRCUMFERENTIAL INTERIOR OF THE CASING IS FUSED WITH THE THERMIT METAL TO PROVIDE A BUILT-UP CASING SHROUD.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |